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There are two types of attentional shifts that are helpful in obtaining visual information. These two shifts are covert and overt. Each is used for different amounts of visual information obtained in the environment observed.

Covert attentional shifts are those in which visual stimuli are processed without fovea shifts or eye movement. Per second approximately 20 to 30 objects can be visually processed through covert shifts. This type of shift helps to obtain basic spatial layout and knowledge of how various stimuli relate to each other.

Overt attentional shifts are when the direction of the fovea is moved with the change of attention. Three to four objects can be processed within a second when overt shifts are utilized. Although slower that cover attentional shifts, overt helps obtain more detail of select stimuli. In essence it helps with focusing attention on specific stimuli.

Attention
Aspects of attention
Absent-mindedness | Attentional control | Attention span | Attentional shift | Attention management | Attentional blink | Attentional bias | Attention economy | Attention and emotion | Attention optimization | Change blindness | Concentration |Dichotic listening | Directed attention fatigue | Distraction | Distractibility | Divided attention | Hyperfocus | Inattentional blindness | Mindfulness |Mind-wandering | Meditation | Salience | Selective attention | Selective inattention | Signal detection theory | Sustained attention | Vigilance | Visual search |
Developmental aspects of attention
centration | [[]] |
Neuroanatomy of attention
Attention versus memory in prefrontal cortex | Default mode network | Dorsal attention network | Medial geniculate nucleus | | Neural mechanisms | Ventral attention network | Intraparietal sulcus |
Neurochemistry of attention
Glutamatergic system  | [[]] |
Attention in clinical settings
ADHD | ADHD contoversy | ADD | AADD | Attention and aging | Attention restoration theory | Attention seeking | Attention training | Centering | Distractability | Hypervigilance | Hyperprosexia | Cognitive-shifting | Mindfulness-based Cognitive Therapy |
Attention in educational settings
Concentration |
Assessing attention
Benton | Continuous Performance Task | TOMM | Wechsler Memory Scale |
Treating attention problems
CBT | Psychotherapy |
Prominant workers in attention
Baddeley | Broadbent | [[]] | Treisman | Cave |
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